CN105827440B - Intelligent terminal and routing configuration method thereof - Google Patents

Abstract

The invention discloses an intelligent terminal and a route configuration method thereof, wherein the method comprises the following steps: enabling the intelligent terminal to receive the access of a client by using a server identity; responding to a configuration request of a client for requesting routing configuration information and calling a corresponding configuration process; and constructing the routing configuration information by the configuration process and feeding back the routing configuration information to the client, wherein the routing configuration information comprises a control option for forcing the client to execute static routing configuration. By implementing the method, the Android intelligent terminal can establish a technical framework based on a WiFi Direct technology, and a client under the communication technology can access the Internet through a server.

Description

Intelligent terminal and routing configuration method thereof

technical field

The present invention relates to a networking technology of an intelligent terminal, in particular, the present invention relates to an intelligent terminal and a routing configuration method thereof.

Background technique

Smart terminals of the Android system, including mobile phones, tablet computers, driving recorders, wearable watches, glasses, etc., are usually equipped with corresponding WiFi modules that comply with the IEEE802.11 protocol specification, and are loaded with corresponding drivers. , providing the corresponding interface for the processes above the framework layer to call.

Generally, WiFi modules that comply with the 802.11 protocol support multiple working modes, such as IBSS, Managed, AP, AP/VLAN, Monitor, mesh point, P2P-Client, P2P-GO and other modes. These modes can realize different networking functions . Among them, Managed is commonly known as Station (STA) or workstation mode, AP is commonly known as Access Point mode (Access Point); IBSS is adhoc or direct connection mode, P2P is commonly known as WiFi Direct technology, which belongs to Wi-FiAlliance (Wi-Fi Alliance) launched an important technical specification. In STA mode, the smart terminal becomes a workstation, which can access a terminal in AP mode. Similarly, P2P-Client is equivalent to STA, and can access an intelligent terminal in P2P-GO (P2P Group Owner) mode equivalent to AP. It can be seen that there are at least two systems, IBSS and WiFi Direct, that can realize the networking of multiple smart terminals. The same smart terminal, based on the same WiFi module, can act as a hotspot or a station.

In one application requirement, it is hoped that the WiFi module of the same smart terminal can work in two modes of site and hotspot at the same time, so that after the smart terminal uses its site mode to access the external network, it can provide services to other WiFi devices through its hotspot mode. Access and tethering services. In reality, the smart terminal based on Windows or IOS can use the functions provided by the WiFi module, so that this kind of smart terminal can virtualize two devices, that is, the station device and the hotspot device. On this basis, the smart terminal allows on the one hand It can access wireless AP, and on the other hand, it can act as AP for other WiFi devices to access.

However, the Android smart terminal does not have this function. In the function realization of the Android system, it does not have the ability to open the hotspot mode and the station mode of the WiFi module to the user at the same time. Therefore, in practical applications, when a smart terminal accesses the AP of the company's LAN through WiFi in station mode, it is desired to read and upload the data of another WiFi device without a display interface to the cloud. Can not open its own hotspot mode at the same time (because its opening will inevitably lead to disconnection) and station mode and cannot be satisfied. Similarly, if a user uses a smart terminal to communicate with a third party in hotspot mode, it is obviously impossible to access a local area network in station mode to obtain data.

It can be seen that Android-based smart terminals are inherently deficient in the function of realizing two WiFi networking modes of hotspot and site. Therefore, it can be seen that solving this problem is an important factor for efficient use of the networking conditions of Android smart terminals. premise.

The above problems are suitable to be solved under the WiFi P2P technical specification. The problem brought about by this is that the client and the server are connected in the P2P mode. Since only the point-to-point connection is originally considered, the routes between them will not change. To realize that the client can connect to the external network through the server, it is necessary to enable the client to reasonably configure its own routing settings so that it can use the server as a gateway to access the external network.

Contents of the invention

The object of the present invention is to provide an intelligent terminal and a routing configuration method thereof for at least one of the above shortcomings.

In order to achieve this goal, the present invention takes the following technical solutions:

A routing configuration method for an intelligent terminal provided by the present invention includes the following steps:

Make the smart terminal receive the client's access as a server;

Invoking the corresponding configuration process in response to the client's configuration request for routing configuration information;

The configuration process constructs the routing configuration information and feeds it back to the client. The routing configuration information includes control options that force the client to perform static routing configuration.

Specifically, the client works in the WiFi P2P-Client mode, and correspondingly, the server works in the WiFi P2P Group Owner mode.

Further, the routing configuration information includes data for completing the routing configuration of the client: subnet mask, static route, gateway, and DNS address.

Preferably, the gateway points to the server itself.

Specifically, the configuration request initiated by the client is a client request regulated by the DHCP protocol, and the DHCP service provided by the server responds to the request and feeds back the routing configuration information through its configuration process.

Further, the routing configuration information includes two kinds of static routing data corresponding to different setting modes.

Specifically, the configuration file content of the configuration process is modified to be different from the default content provided by the Android system, so that the configuration process can add the control option to the routing configuration information.

Preferably, the configuration process is a DNSmasq process provided by the Android system, and the control option is: dhcp-option-force.

An intelligent terminal provided by the present invention includes:

An access unit, configured to enable the smart terminal to receive client access as a server;

A response unit configured to invoke a corresponding configuration process in response to a configuration request from a client for routing configuration information;

The feedback unit is configured to construct the routing configuration information by the configuration process and feed it back to the client, where the routing configuration information includes a control option to force the client to perform static routing configuration.

Specifically, the client works in the WiFi P2P-Client mode, and correspondingly, the server works in the WiFi P2P Group Owner mode.

Preferably, the routing configuration information includes data for completing the routing configuration of the client: subnet mask, static route, gateway, and DNS address.

Specifically, the gateway points to the server itself.

Further, the configuration request initiated by the client is a client request regulated by the DHCP protocol, and the DHCP service provided by the server responds to the request and feeds back the routing configuration information through its configuration process.

Specifically, the routing configuration information includes two types of static routing data corresponding to different setting modes.

Preferably, the configuration file content of the configuration process is modified to be different from the default content provided by the Android system, so that the configuration process can add the control options to the routing configuration information.

Specifically, the configuration process is a DNSmasq process provided by the Android system, and the control option is: dhcp-option-force.

Compared with the prior art, the present invention has at least the following advantages:

The present invention makes full use of the P2P mode regulated by the WiFi Direct technology. On the premise that the P2P client is connected to the P2P server, the server adds the routing configuration information to the client for the client to force itself to implement static routing configuration. Control options, so that the client can use the DHCP routing configuration information obtained from the server to force itself to complete the static routing configuration according to its default configuration logic, so that the client has the ability to exchange data with the external network through the server.

In a nutshell, the implementation of the present invention enables Android smart terminals to establish a technical architecture based on WiFi Direct technology, allowing clients under this communication technology to access the Internet through the server. However, this is not exhaustive, and in part will be set forth in the description which follows, which will become apparent from the description, or may be learned by practice of the invention.

Description of drawings

The above and/or additional aspects and advantages of the present invention will become apparent and easy to understand from the following description of the embodiments in conjunction with the accompanying drawings, wherein:

Fig. 1 is a schematic flow chart of the intelligent terminal routing configuration method of the present invention;

Fig. 2 is a schematic structural diagram of an intelligent terminal of the present invention;

FIG. 3 is a schematic flowchart of a method for controlling the coexistence of a hotspot mode and a site mode of an intelligent terminal according to the present invention.

Detailed ways

Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

Those skilled in the art will understand that unless otherwise stated, the singular forms "a", "an", "said" and "the" used herein may also include plural forms. It should be further understood that the word "comprising" used in the description of the present invention refers to the presence of said features, integers, steps, operations, elements and/or components, but does not exclude the presence or addition of one or more other features, Integers, steps, operations, elements, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may also be present. Additionally, "connected" or "coupled" as used herein may include wireless connection or wireless coupling. The expression "and/or" used herein includes all or any elements and all combinations of one or more associated listed items.

Those skilled in the art can understand that, unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meaning as commonly understood by those of ordinary skill in the art to which this invention belongs. It should also be understood that terms, such as those defined in commonly used dictionaries, should be understood to have meanings consistent with their meaning in the context of the prior art, and unless specifically defined as herein, are not intended to be idealized or overly Formal meaning to explain.

Those skilled in the art can understand that the "terminal" and "terminal equipment" used here not only include wireless signal receiver equipment, which only has wireless signal receiver equipment without transmission capabilities, but also include receiving and transmitting hardware. A device having receive and transmit hardware capable of bi-directional communication over a bi-directional communication link. Such equipment may include: cellular or other communication equipment, which has a single-line display or a multi-line display or a cellular or other communication equipment without a multi-line display; PCS (Personal Communications Service, personal communication system), which can combine voice, data Processing, facsimile and/or data communication capabilities; PDA (Personal Digital Assistant, Personal Digital Assistant), which may include radio frequency receiver, pager, Internet/Intranet access, web browser, notepad, calendar and/or GPS (Global Positioning System (Global Positioning System) receiver; a conventional laptop and/or palmtop computer or other device having and/or including a radio frequency receiver. As used herein, a "terminal", "terminal device" may be portable, transportable, installed in a vehicle (air, sea, and/or land), or adapted and/or configured to operate locally, and/or In distributed form, the operation operates at any other location on Earth and/or in space. The "terminal" and "terminal equipment" used here can also be communication terminals, Internet terminals, music/video playback terminals, such as PDAs, MIDs (Mobile Internet Devices, mobile Internet devices) and/or with music/video playback terminals. Functional mobile phones, smart TVs, set-top boxes and other devices.

As shown in Figure 1, the smart terminal routing configuration method of the present invention includes the following steps S21 to S24:

Step S21, enabling the smart terminal to receive access from the client as a server.

The two roles of the server and the client, in the present invention, are mainly compared to the two smart terminals regulated by the WiFi P2P protocol, wherein the chip module of the smart terminal as the client works on the protocol. In the standard P2P-Client mode, it acts as a client role; in contrast, the intelligent terminal of the present invention works in the P2P-Group Owner mode specified in the protocol, that is, it acts as a server role.

In the Android operating system, the WiFi chip module of the same intelligent terminal is not allowed to work in both client and server modes at the same time. Therefore, to achieve this effect, please refer to an example disclosed later in the present invention, that is, the following A method for controlling the coexistence of hotspot mode and site mode of an intelligent terminal disclosed as a server. However, it should be understood that no matter whether the server is in the coexistence state of the two modes, the effective implementation of the present invention will not be affected. Because the present invention aims to solve the technical problem of how to configure the routing of the client under the aforementioned protocol specifications so that it can communicate through the server, therefore, whether the server itself can communicate with the external network does not affect the technical realization of the present invention .

In any case, the intelligent terminal of the present invention operates its own WiFi chip module in the state of WiFi P2P GO according to the aforementioned technical specifications, which can be accessed by the client and complete the initial connection, acting as an AP ( wireless access point).

Step S22, invoking a corresponding configuration process in response to the client's configuration request for routing configuration information.

According to the specifications of the WiFi P2P protocol, after the client completes the initial connection, it will initiate a configuration request DHCP Request (DHCP, Dynamic Host Configuration Protocol, Dynamic Host Configuration Protocol) to the server to obtain the corresponding routing configuration information, usually the client will At least the following options are required in its request:

The above options are basically agreed upon in accordance with the specifications of the DHCP protocol, and are known to those skilled in the art.

The server is set up with a DHCP server by default, which can respond to the configuration request and provide a piece of routing configuration information, including configuration data (information) corresponding to the options. Therefore, after the client sends out the above configuration request, if the communication between the client and the server is smooth, it can obtain the corresponding configuration list, which can be provided to the client to set itself according to each option to complete the routing configuration.

However, the DHCP service needs to provide the client with the routing configuration information through the DNSmasq process, that is, the server configuration process. DNSmasq is a small and convenient tool for configuring DNS and DHCP, suitable for small networks, which provides DNS functions and optional DHCP functions. It serves domain names that are only applicable locally, and these domain names do not appear in global DNS servers. The DHCP server combines with the DNS server, and allows the addresses assigned by DHCP to be resolved normally in DNS, and the addresses and related commands assigned by these DHCPs can be configured in each host (such as the client of the present invention), or can be configured in a In a core device (such as the server serving as a router), DNSmasq supports static and dynamic DHCP configuration modes.

After the server calls the DNSmasq process, the process will perform the subsequent function of providing routing configuration information to the client.

Step S23, the configuration process constructs the routing configuration information and feeds it back to the client, the routing configuration information includes a control option to force the client to perform static routing configuration.

The DNSmasq process has a configuration file of the same name, dnsmasq.conf, in which routing data for clients can be written, including the options listed above. Therefore, by reading the corresponding content of the configuration option, the configuration process can form the routing configuration information and provide it to the client that initiates the configuration request.

It should be pointed out that although the various options provided above do not include the option with the serial number of DHCP protocol 121, in fact, options 121 and 33 provide static routing data with the same content. However, the configuration list provided by the DHCP service of the Android system , regardless of whether it contains option 33 or option 121 in the routing configuration information, the client ignores the static routing data of option 33 and option 121. However, research has found that when the server adds the control option dhcp-option-force for forcing the client to perform static routing configuration in the routing configuration information it provides, the situation can be improved. Specifically, when the static routing data of 121 is specially provided and cooperates with the control option, the client will complete the configuration of its own static routing data as an absolutely mandatory instruction. Therefore, the server of the present invention modifies the configuration file of the configuration information, so that it has the ability to enable the configuration process to feed back the routing configuration information including the control options to the client.

Specifically, by default, without modifying the configuration file of the configuration process, when the client receives the routing configuration information from the server, it will start its configuration process according to the default rules of the Android system. Complete the routing configuration, and not be responsible for completing the free static routing data settings during this period. In this case, the client cannot access the external network through the server due to the lack of static routing information. Otherwise, the data packets of the external network cannot reach the client smoothly. . Therefore, the configuration file required for the configuration process needs to be reconfigured. Please refer to the following example for modifying the configuration file:

First, make the configuration process described in the closed state.

In one embodiment, the following command is executed: sudo dnsmasq-C./dnsmasq.conf-z-k, the purpose of executing this command is to close the dnsmasq process that executes the routing configuration with the default process of the Android system with the highest system authority, even if it has completed Routing configuration, such as the above-mentioned instructions, can also be turned off, and the subsequent processing will prevail.

Then, modify the configuration file of the configuration process to include control options that force the client to perform static routing configuration, and force the client to configure itself according to the static routing data with the option 121 in the routing configuration information provided by the server .

After closing the configuration process, modify its configuration file dnsmasq.conf, for example:

#Prevent the dnsmasq process from reading any other domain name files such as /etc/resolv.conf

no-resolv

port=0

#Network card binding

interface=wlan0

#Specify the start address, end address and lease time

dhcp-range=10.15.0.3,10.15.0.20,12h

#The domain name server address sent to the client

server=114.114.114.114

# Mandatory routing configuration, set control options and set options to 121

dhcp-option-force=121,192.168.1.0/24,10.15.0.1

dhcp-option-force=33,192.168.1.0,10.15.0.1

Then, after the subsequent dnsmasq process is started again, it will directly read its configuration file, and seal the data corresponding to the above-mentioned characteristics, especially including the control option and option 121, into the agreed routing configuration information. It contains various corresponding data, which is fed back to the client in response to the client's configuration request.

Correspondingly, after receiving the routing configuration information, the client parses it, obtains the data corresponding to each option, and updates its own network settings. When it knows the control options and corresponding parameters When the option is 121, you can configure your own static routing data by yourself. After completing the configuration of this process, the client can communicate with the external network through the intelligent terminal acting as the server of the present invention.

Please refer to Fig. 2, according to the computer software modularization thinking, the present invention also provides an intelligent terminal, which includes an access unit 21, a response unit 22 and a feedback unit 23, and the functions of each unit are disclosed as follows:

The access unit 21 is configured to enable the smart terminal to receive client access as a server.

The two roles of the server and the client, in the present invention, are mainly compared to the two smart terminals regulated by the WiFi P2P protocol, wherein the chip module of the smart terminal as the client works on the protocol. In the standard P2P-Client mode, it acts as a client role; in contrast, the intelligent terminal of the present invention works in the P2P-Group Owner mode specified in the protocol, that is, it acts as a server role.

In the Android operating system, the WiFi chip module of the same intelligent terminal is not allowed to work in both client and server modes at the same time. Therefore, to achieve this effect, please refer to an example disclosed later in the present invention, that is, the following A method for controlling the coexistence of hotspot mode and site mode of an intelligent terminal disclosed as a server. However, it should be understood that no matter whether the server is in the coexistence state of the two modes, the effective implementation of the present invention will not be affected. Because the present invention aims to solve the technical problem of how to configure the routing of the client under the aforementioned protocol specification, so that it has the ability to communicate through the server, therefore, whether the server itself can communicate with the external network does not affect the technical problem of the present invention. Technical realization.

In any case, the intelligent terminal of the present invention operates its own WiFi chip module in the state of WiFi P2P GO according to the aforementioned technical specifications, which can be accessed by the client and complete the initial connection, acting as an AP ( wireless access point).

The response unit 22 is configured to invoke a corresponding configuration process in response to a configuration request from a client for routing configuration information.

According to the specifications of the WiFi P2P protocol, after the client completes the initial connection, it will initiate a configuration request DHCP Request (DHCP, Dynamic Host Configuration Protocol, Dynamic Host Configuration Protocol) to the server to obtain the corresponding routing configuration information, usually the client will At least the following options are required in its request:

The above options are basically agreed upon in accordance with the specifications of the DHCP protocol, and are known to those skilled in the art.

The server is set up with a DHCP server by default, which can respond to the configuration request and provide a piece of routing configuration information, including configuration data (information) corresponding to the options. Therefore, after the client sends the above configuration request, if the communication between the client and the server is smooth, it can obtain the corresponding configuration list, which can be provided to the client to set itself according to each option to complete the routing configuration.

However, the DHCP service needs to provide the client with the routing configuration information through the DNSmasq process, that is, the server configuration process. DNSmasq is a small and convenient tool for configuring DNS and DHCP, suitable for small networks, which provides DNS functions and optional DHCP functions. It serves domain names that are only applicable locally, and these domain names do not appear in global DNS servers. The DHCP server combines with the DNS server, and allows the addresses assigned by DHCP to be resolved normally in DNS, and the addresses and related commands assigned by these DHCPs can be configured in each host (such as the client of the present invention), or can be configured in a In a core device (such as the server serving as a router), DNSmasq supports static and dynamic DHCP configuration modes.

After the response unit 22 of the server invokes the DNSmasq process, the process will execute the function of providing routing configuration information to the client.

The feedback unit 23 is configured to construct the routing configuration information by the configuration process and feed it back to the client, where the routing configuration information includes control options for forcing the client to perform static routing configuration.

The DNSmasq process has a configuration file of the same name, dnsmasq.conf, in which routing data for clients can be written, including the options listed above. Therefore, by reading the corresponding content of the configuration option, the configuration process can form the routing configuration information and provide it to the client that initiates the configuration request.

It should be pointed out that although the various options provided above do not include the option with the serial number of DHCP protocol 121, in fact, options 121 and 33 provide static routing data with the same content. However, the configuration list provided by the DHCP service of the Android system , regardless of whether it contains option 33 or option 121 in the routing configuration information, the client ignores the static routing data of option 33 and option 121. However, research has found that when the server adds the control option dhcp-option-force for forcing the client to perform static routing configuration in the routing configuration information it provides, the situation can be improved. Specifically, when the static routing data of 121 is specially provided and cooperates with the control option, the client will complete the configuration of its own static routing data as an absolutely mandatory instruction. Therefore, the server of the present invention modifies the configuration file of the configuration information, so that it has the ability to enable the configuration process to feed back the routing configuration information including the control options to the client.

Specifically, by default, without modifying the configuration file of the configuration process, when the client receives the routing configuration information from the server, it will start its configuration process according to the default rules of the Android system. Complete the routing configuration, and not be responsible for completing the free static routing data settings during this period. In this case, the client cannot access the external network through the server due to the lack of static routing information. Otherwise, the data packets of the external network cannot reach the client smoothly. . Therefore, the configuration file required for the configuration process needs to be reconfigured. Please refer to the following example for modifying the configuration file:

First, make the configuration process described in the closed state.

In one embodiment, the following command is executed: sudo dnsmasq-C./dnsmasq.conf-z-k, the purpose of executing this command is to close the dnsmasq process that executes the routing configuration with the default process of the Android system with the highest system authority, even if it has completed Routing configuration, such as the above-mentioned instructions, can also be turned off, and the subsequent processing will prevail.

Then, modify the configuration file of the configuration process to include control options that force the client to perform static routing configuration, and force the client to configure itself according to the static routing data with the option 121 in the routing configuration information provided by the server .

After closing the configuration process, modify its configuration file dnsmasq.conf, for example:

#Prevent the dnsmasq process from reading any other domain name files such as /etc/resolv.conf

no-resolv

port=0

#Network card binding

interface=wlan0

#Specify the start address, end address and lease time

dhcp-range=10.15.0.3,10.15.0.20,12h

#The domain name server address sent to the client

server=114.114.114.114

# Mandatory routing configuration, set control options and set options to 121

dhcp-option-force=121,192.168.1.0/24,10.15.0.1

dhcp-option-force=33,192.168.1.0,10.15.0.1

Then, after the subsequent dnsmasq process is started again, it will directly read its configuration file, and seal the data corresponding to the above-mentioned characteristics, especially including the control option and option 121, into the agreed routing configuration information. It contains various corresponding data, which is fed back to the client in response to the client's configuration request.

Correspondingly, after receiving the routing configuration information, the client parses it, obtains the data corresponding to each option, and updates its own network settings. When it knows the control options and corresponding parameters When the option is 121, you can configure your own static routing data by yourself. After completing the configuration of this process, the client can communicate with the external network through the intelligent terminal acting as the server of the present invention.

A smart terminal hotspot mode and site mode coexistence control method cited in the present invention can cooperate with the aforementioned method of the present invention to enhance the function of the server to access the external network, so that the function of the present invention on the server The intelligent terminal has the function equivalent to a router, and only needs to rely on the specification of the WiFi P2P protocol.

Specifically as shown in FIG. 3, the coexistence control method includes the following steps S11-S14:

Step S11, receiving a control instruction for starting the hotspot mode and the station mode of the smart terminal from the user interface.

The realization of the present invention is suitable for providing and installing an application program for Android, which is started, and in the case of obtaining the highest authority of the system or opening the highest authority of the system, and improving the interactive function to the system to realize the control required by the method.

The user interface generally refers to the display interface that can be used to send the control command to the smart terminal, for example, it can be an option (or button, added by the application program, the same below) in the setting page of the Android system, or It is an option in a notification bar or an interactive page called out from the desktop, or an option in a page constructed by an active component of the application program.

In the present invention, the following two methods are preferred for receiving the control instruction:

Firstly, by providing a single control button on the user interface for one-button receiving of the control instruction, this method is convenient for the user to realize one-button operation.

Second, control buttons are provided on the user interface corresponding to the hotspot mode and the station mode, so as to generate control instructions corresponding to starting the corresponding modes corresponding to different buttons.

According to the control buttons provided in the above way, usually these buttons can be preferably set in the system desktop notification bar list, or provided in the form of desktop floating windows, which is convenient for users to touch and control without affecting the user's visual effect. Of course, they can also be used as The default function of the system is activated when the user turns on the WiFi button. Preferably, the application program can set itself as a self-starting item, so that when the system is started, the buttons can be loaded by itself, so as to facilitate the user's operation.

After the user touches the control button through the user interface, a corresponding control command is generated, and the control command will be received by the process of the application program for subsequent processing.

Step S12, under the control of the control instruction, start the system preset hotspot maintenance process for configuring the smart terminal as a hotspot mode and the site maintenance process for configuring the smart terminal as a station mode;

Under the action of the control command generated by user control, the site maintenance process and hotspot maintenance process preset by the Android system are started, wherein the site maintenance process is used to configure the smart terminal as a site mode. Similarly, the hotspot maintenance process It is used to configure the smart terminal as hotspot mode. According to the analysis of the Android system, when the hotspot maintenance process is opened, the site maintenance process will be closed by the former. Therefore, making good use of this discovery will help maintain the coexistence of the two processes.

The site maintenance process refers specifically to the wpa_supplicant process provided by the Android system itself. The wpa_supplicant is an open source project source code that was modified by Google and added to the Android mobile platform. It is mainly used to support WEP, WPA/WPA2 and WAPI wireless protocols and encryption authentication. , but the actual work content is to interact with the driver to report data to the user through the socket (whether wpa_supplicant communicates with the upper layer or wpa_supplicant and the driver use socket communication), and the user can send commands to wpa_supplicant through the socket to mobilize the driver to operate the WiFi chip. Simply put, wpa_supplicant is a transfer station for WiFi drivers and users plus support for protocols and encryption authentication. The compiled wpa_supplicant source program can see two main executable tools: wpa_supplicant and wpa_cli. wpa_supplicant is the core program, its relationship with wpa_cli is the relationship between service and client: run wpa_supplicant in the background, use wpa_cli to search, set, and connect to the network.

The following provides an example of using wpa_cli to complete the network connection, but it should not be construed as a limitation to the implementation of the present invention. To realize the network connection function, you first need to run the wpa_supplicant program to load the basic functions;

Execution: /system/bin/wpa_supplicant-d-Dwext-iwlan0-c/data/misc/wifi/wpa_supplicant.conf

in:

-d: Add debugging information

-Dwext: wext, driver name

-iwlan0: wlan0, network interface name

/system/bin/wpa_supplicant: wpa_supplicant, executable program path

/data/misc/wifi/wpa_supplicant.conf: wpa_supplicant configuration file path

Then, run the command line tool wpa_cli;

Execute: wpa_cli-iwlan0-p/data/system/wpa_supplicant

Note that wpa_supplicant in -p/data/system/wpa_supplicant is not an executable program, but a control socket.

This will enter interactive mode. The commands in the interactive mode are as follows:

Full command

Short command

Description

status

stat

displays the current connection status

disconnect

disc

prevents wpa_supplicant from connecting to any access point

quit

q

exits wpa_cli

terminate

term

kills wpa_supplicant

reconfigure

recon

reloads wpa_supplicant with the configuration file supplied(-cparameter)

scan

scan

scans for available access points (only scans it, doesn't display anything)

scan_result

scan_r

displays the results of the last scan

list_networks

list_n

displays a list of configured networks and their status (active or not, enabled or disabled)

select_network

select_n

select a network among those defined to initiate a connection (ie select_network 0)

enable_network

enable_n

makes a configured network available for selection (ie enable_network0)

disable_network

disable_n

makes a configured network unavailable for selection (ie disable_network 0)

remove_network

remove_n

removes a network and its configuration from the list (ie remove_network 0)

add_network

add_n

adds a new network to the list. Its id will be created automatically

set_network

set_n

shows a very short list of available options to configure a network when supplied with no parameters.

See next section for a list of extremely useful parameters to be used with set_network and get_network.

get_network

get_n

displays the required parameter for the specified network. See next section for a list of parameters

save_config

save_c

saves the configuration

The above command items can be viewed from Android's public technical documentation, which is for reference only.

The command to set the basic format of the network is: set_network<network id><key><parameter>[<parameter>]

The command to display the basic format of network information is: get_network<network id><key>

The corresponding parameters are as follows:

key

Description

Parameters

ssid

Access point name

string

id_str

String identifying the network

string

priority

Connection priority over other APs

number(0 being the default low priority)

bssid

Mac address of the access point

mac address

scan_ssid

Enable/disbale ssid scan

0,1,2

key_mgmt

Type of key management

WPA-PSK,WPA_EAP,None

pairwise

Pairwise ciphers for WPA

CCMP, TKIP

group=TKIP

Group ciphers for WPA

CCMP, TKIP, WEP104, WEP40

psk

Pre-Shared Key(clear or encrypted)

string

wep_key0

WEP key (up to 4: wep_key[0123])

string

eap

Extensible Authentication Protocol

MD5, MSCHAPV2, OTP, GTC, TLS, PEAP, TTLS

identity

EAP identity string

string

password

EAP password

string

ca_cert

Pathname to CA certificate file

/full/path/to/certificate

client_cert

Pathname to client certificate

/full/path/to/certificate(PEM/DER)

private_key

Pathname to a client private key file

/full/path/to/private_key(PEM/DER/PFX)

In the same way, the above parameter table can also be obtained from the Android official through public channels, and it is for reference only and will not be described in detail. The following uses a specific example for connecting to an AP without encryption to illustrate how to implement a network connection:

>add_network (will display a network ID, assuming the return value is 0)

>set_network 0ssid "666"

>set_network 0key_mgmt NONE

>enable_network 0

>quit

Then use a specific example for connecting to a WEP-encrypted AP to illustrate:

>add_network (assuming network ID returns 1)

>set_network 1ssid "666"

>set_network 1key_mgmt NONE

>set_network 1wep_key0 "your ap password"

>enable_network 1

An example of connecting to an AP encrypted with WPA-PSK/WPA2-PSK is as follows:

>add_network (assuming network ID returns 2)

>set_network 2ssid "666"

>set_network 2psk "your pre-shared key"

>enable_network 2

At this point, the wifi module can connect to the AP.

The above is to realize the connection of wifi network through the command line tool wpa_cli. Of course, the connection can also be realized through the configuration file of wpa_supplicant.

May wish to review the command executed when running wpa_supplicant earlier:

/system/bin/wpa_supplicant-d-Dwext-iwlan0-c/data/misc/wifi/wpa_supplicant.conf

We added -c/data/misc/wifi/wpa_supplicant.conf during execution, so the settings of the AP to be connected can be written in the wpa_supplicant.conf configuration file in a certain format. E.g:

ctrl_interface=DIR=/data/system/wpa_supplicant GROUP=systemupdate_config=1

network={

ssid="my access point"

proto=WPA

key_mgmt=WPA-PSK

psk="you pass words"

}

It can be seen that although the Android system automatically closes the site maintenance process when the hotspot maintenance process is enabled by default, the application process can control the site by itself through the above two methods of using the command or using the configuration file. The start of the maintenance process.

The hotspot maintenance process refers specifically to the hostapd process provided by the Android system. hostapd is a user-controlled daemon for wireless access points (APs) and authentication servers. hostapd implements IEEE802.11 AP management, IEEE802.1X/WPA/WPA2/EAP authorization, RADIUS client, EAP server and RADIUS authorization server. The latest version supports Linux system (HOST AP, madwifi, mac80211-based driver) and FreeBSD (net80211). hostapd is designed as a daemon program (process) that runs in the background and performs some related control and authorization operations.

The difference between Hostapd and wpa_supplicant is mainly reflected in that wpa_supplicant supports basic AP operations, but does not include various more detailed parameter adjustments, such as WPA2-Enterprise (RADIUS server authentication). It can be seen that the two processes are only different in division of labor, and their functions are similar.

Likewise, hostapd allows it to be configured in such a way that it can be started by an application itself. The following provides an example of using its configuration file to achieve configuration:

Here is an example of the structure of a relevant configuration file, numbered on the left for reference:

Based on this configuration file, a hotspot can be established as follows:

Build a bridge: sudo apt-get install bridge-utils

Create a bridge:

sudo brctl adbr br0

02. sudo ifconfig br0 192.168.2.236 netmask 255.255.255.0

03. sudo route add default gw 192.168.2.254

Connect both ends of the bridge:

sudo brctl addif br0eth0

02. sudo brctl addif br0wlan0

Enable configuration:

sudo ./hostapd hostapd.conf

Under normal circumstances, if there are no other failures, other smart terminals can scan the SSID of the hotspot thus established. Since the hotspot is self-built and does not have DHCP service, the smart terminal needs to adjust the static IP by itself to realize the LAN connection. .

The principle of the site maintenance process and the hotspot maintenance process and the exemplary introductions of their specific implementation respectively given above, those skilled in the art can understand the flexible and changeable implementation modes of the present invention on the basis of the above disclosure. Among them, it should be pointed out that, in order to facilitate the implementation and improve the implementation efficiency, no matter for the hostapd or wpa_supplicant process, it is recommended to use the configuration file to preset the network configuration information in its .conf file for pre-configuration, and then start the corresponding maintenance process.

As mentioned in the previous step, the user can either turn on the hotspot mode and the station mode at the same time through a single control button, or turn it on through two buttons corresponding to the two modes, which essentially provides a variety of operation variations. Corresponding to these changes, further examples are given below.

It is assumed that the user interface provides a single control button, and the user triggers his user command through the single control button. Here, the hostapd process, that is, the hotspot maintenance process, can be started first. Since the opening of the hostapd process will cause the wpa_supplicant process to be automatically closed, the application process of the present invention needs to refer to the above-mentioned implementation method. After the hotspot maintenance process is opened, the site maintenance process is started by itself, thus two maintenance processes can be realized. Coexistence of processes. Conversely, it is also possible to start the site maintenance process first, and then start the hotspot maintenance process referring to the above example after it is started. That is to say, corresponding to the control instruction caused by a single control key, the starting sequence of the hotspot maintenance process and the site maintenance process can be flexibly arranged in different implementation manners.

For the example in which different control buttons are provided on the corresponding user interface to respectively represent different maintenance processes of account opening, the corresponding maintenance processes can be opened in order according to the order in which the user clicks on different control buttons, which does not affect the implementation of the present invention. .

No matter how the human-computer interaction is realized, the focus of the control of the hotspot maintenance process and the site maintenance process is that the two are opened successively, and the process of the application program called in the present invention is required to play a role.

In the preferred solution, it is recommended to allow the site maintenance process to start before the hotspot maintenance process. When ensuring that the smart terminal can connect to the external network, providing access functions to other smart terminals can avoid some useless work and save energy.

Theoretically, after starting the site maintenance process and the hotspot maintenance process one after another, the coexistence of the two maintenance processes can be realized, and then, due to the influence of some potential risks of the system, any one of the two maintenance processes may be shut down , so it needs to be strengthened by follow-up measures.

Step S13, maintaining the hotspot maintenance process and the site maintenance process to work in coexistence.

The co-existing work referred to here means that the hotspot maintenance process and the site maintenance process may be started successively, but not necessarily at the same time. As long as both exist and run in the memory, the running cycles of the two in the memory are concurrent in time, so that within a time period, the smart terminal can be connected to or connected to other access points, which can be regarded as coexistence style work.

After the hotspot maintenance process is opened, because it will close the site maintenance process, therefore, the application program process of the present invention is suitable according to the predetermined predetermined time length, and after the predetermined time length ends, start the site maintenance process again, so as to avoid previous site maintenance. Process conflicts, resulting in unsuccessful startup. In the same way, if the site maintenance process is started first, in order to avoid possible shutdown of the hotspot maintenance process, this method can also be applied.

In order to ensure the normal or relatively normal use of the hotspot maintenance process and the site maintenance process during user use, the application program process of the present invention can also periodically scan whether any one of the two maintenance processes is closed in the background. When one of them is closed, the closed process is controlled to start again according to the aforementioned method, so as to ensure that the two maintenance processes can work in coexistence according to user expectations.

It can be seen that keeping the hotspot maintenance process and the site maintenance process running in the memory is an enhanced means to ensure network stability.

Step S14, output to the user interface result information indicating that the smart terminal is in a dual-mode state where the hotspot mode and the station mode coexist.

After completing the above-mentioned control means of step S12 or S13, so that the two maintenance processes coexist, the application program process of the present invention can output some result information to the user interface to inform the user that the smart terminal is currently in the hotspot mode and A dual-mode state where site modes coexist. As for the expression form of the result information, it can be displayed in the notification bar through a system message, or displayed in a pop-up window on the desktop. A better way can be to call a preset third-party icon to represent the The smart terminal is in a dual-mode state where the hotspot mode and the site mode coexist, and the third-party icon is displayed in the system status bar of the user interface, making it easier for the user to obtain the result information.

It should be pointed out that after the operation of step S12, theoretically, step S14 can be executed to realize icon display, and then step S13 can be continuously executed. The execution order of each step of the present invention should be understood based on the disclosed substantive principles of the present invention.

To sum up, the present invention enables the Android smart terminal as the server specified by the WiFi P2P protocol to force its client to configure static routing, thereby building an intranet with the server, and the server provides the client with an external network connection. The ability to enter has greatly expanded the networking capabilities of smart terminals. In particular, when the hotspot mode and site mode coexistence function is realized on the server side, the network expansion function can only rely on WiFi P2P technology, which greatly improves the utilization efficiency of the network infrastructure components of smart terminals.

Those skilled in the art will appreciate that the present invention includes devices related to performing one or more of the operations described in this application. These devices may be specially designed and fabricated for the required purposes, or they may include known devices found in general purpose computers. These devices have computer programs stored therein that are selectively activated or reconfigured. Such a computer program can be stored on a device (e.g., computer) readable medium, including but not limited to any type of medium suitable for storing electronic instructions and respectively coupled to a bus. Types of disks (including floppy disks, hard disks, CDs, CD-ROMs, and magneto-optical disks), ROM (Read-Only Memory, read-only memory), RAM (Random Access Memory, random memory), EPROM (Erasable Programmable Read-Only Memory, Erasable Programmable Read-Only Memory), EEPROM (Electrically Erasable Programmable Read-Only Memory, Electrically Erasable Programmable Read-Only Memory), flash memory, magnetic card or optical card. That is, a readable medium includes any medium that stores or transmits information in a form readable by a device (eg, a computer).

Those skilled in the art will understand that computer program instructions can be used to implement each block in these structural diagrams and/or block diagrams and/or flow diagrams and combinations of blocks in these structural diagrams and/or block diagrams and/or flow diagrams . Those skilled in the art can understand that these computer program instructions can be provided to general-purpose computers, professional computers, or processors of other programmable data processing methods for implementation, so that the computer or processors of other programmable data processing methods can execute the present invention. A scheme specified in a block or blocks of a structure diagram and/or a block diagram and/or a flow diagram of the invention disclosure.

Those skilled in the art can understand that the various operations, methods, and steps, measures, and solutions in the processes discussed in the present invention can be replaced, changed, combined, or deleted. Further, other steps, measures, and schemes in the various operations, methods, and processes that have been discussed in the present invention may also be replaced, changed, rearranged, decomposed, combined, or deleted. Further, steps, measures, and schemes in the prior art that have operations, methods, and processes disclosed in the present invention can also be alternated, changed, rearranged, decomposed, combined, or deleted.

The above descriptions are only part of the embodiments of the present invention. It should be pointed out that those skilled in the art can make some improvements and modifications without departing from the principles of the present invention. It should be regarded as the protection scope of the present invention.

Claims (16)

1. an intelligent terminal route configuration method is characterized by comprising the following steps:

enabling the intelligent terminal to receive the access of a client by using a server identity;

Responding to a configuration request of a client for requesting routing configuration information and calling a corresponding configuration process;

modifying the configuration file of the configuration process according to the option with the DHCP protocol serial number of 121, so that the configuration file contains a control option for forcing the client to execute the static routing configuration;

And constructing the routing configuration information by the configuration process and feeding back the routing configuration information to the client, and forcing the client to configure the client according to the static routing data with the option 121 in the routing configuration information provided by the server.

2. The method of claim 1, wherein the ue operates in a WiFi P2P-Client mode, and wherein the server operates in a WiFi P2P Group Owner mode.

3. The method of claim 1, wherein the routing configuration information comprises data for completing routing configuration of the client: subnet mask, static route, gateway, DNS address.

4. The method of claim 3, wherein the gateway points to the server itself.

5. The method of claim 1, wherein the configuration request initiated by the client is a client request specified by a DHCP protocol, and a DHCP service provided by the server responds to the request and feeds back the routing configuration information through a configuration process thereof.

6. The method according to claim 1, wherein the routing configuration information includes two kinds of static routing data corresponding to different setting modes.

7. The method according to claim 1, wherein the configuration file content of the configuration process is modified to be different from the content provided by the Android system by default, so that the configuration process can add the control option to the routing configuration information.

8. the method of claim 1, wherein the configuration process is a DNSmasq process provided by an Android system, and the control options are: dhcp-option-force.

9. An intelligent terminal, comprising:

The access unit is used for enabling the intelligent terminal to receive the access of the client by the identity of the server;

The response unit is configured to respond to a configuration request of the client for requesting the routing configuration information and call a corresponding configuration process;

The feedback unit modifies the configuration file of the configuration process according to the option with the DHCP protocol serial number of 121, so that the configuration file contains a control option for forcing the client to execute the static routing configuration; the configuration process is configured to construct the routing configuration information and feed back the routing configuration information to the client, and the client is forced to configure the client according to the static routing data with the option 121 in the routing configuration information provided by the server.

10. The intelligent terminal of claim 9, wherein the Client operates in a wifi p2P-Client mode, and correspondingly, the server operates in a wifi p2P Group Owner mode.

11. The intelligent terminal of claim 9, wherein the routing configuration information comprises data for completing routing configuration of the client: subnet mask, static route, gateway, DNS address.

12. The intelligent terminal according to claim 11, wherein the gateway points to the server itself.

13. The intelligent terminal according to claim 9, wherein the configuration request initiated by the client is a client request specified by a DHCP protocol, and a DHCP service provided by the server responds to the request and feeds back the routing configuration information through its configuration process.

14. The intelligent terminal according to claim 9, wherein the routing configuration information includes two kinds of static routing data corresponding to different setting modes.

15. The intelligent terminal according to claim 9, wherein the configuration file content of the configuration process is modified to be different from the content provided by the Android system by default, so that the configuration process can add the control options to the routing configuration information.

16. The intelligent terminal according to claim 9, wherein the configuration process is a DNSmasq process provided by an Android system, and the control options are: dhcp-option-force.